diff --git a/examples/Test_tar_gz_tgz/test_tools.h b/examples/Test_tar_gz_tgz/test_tools.h
index a326d30..4caeaec 100644
--- a/examples/Test_tar_gz_tgz/test_tools.h
+++ b/examples/Test_tar_gz_tgz/test_tools.h
@@ -9,13 +9,14 @@ extern "C" {
 
 #endif
 #if defined ESP32
-  #if defined ESP_IDF_VERSION_MAJOR && ESP_IDF_VERSION_MAJOR >= 4
+  #if defined ESP_IDF_VERSION_MAJOR && ESP_IDF_VERSION_MAJOR >= 4 && ESP_IDF_VERSION_MAJOR < 5
     #include <esp32/rom/rtc.h>
   #else
     #include <rom/rtc.h>
   #endif
 #endif
 
+#pragma GCC diagnostic ignored "-Wswitch"
 
 bool isManualReset()
 {
@@ -89,7 +90,7 @@ void SerialPrintCentered(const char *s, bool open = false, bool close = false )
   if( open )  Serial.println( OpenLine );
   Serial.println( out );
   if( close ) Serial.println( CloseLine );
-  delete out;
+  delete[] out;
 }
 
 void SerialPrintfCentered(const char* format, ... )
diff --git a/library.properties b/library.properties
index 9ea5188..bcf404a 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=ESP32-targz
-version=1.1.9
+version=1.2.0
 author=tobozo <tobozo@noreply.github.com>
 maintainer=tobozo <tobozo@noreply.github.com>
 sentence=A library to unpack/uncompress tar, gz, and tar.gz files on ESP32 and ESP8266
diff --git a/src/ESP32-targz-lib.cpp b/src/ESP32-targz-lib.cpp
index a843150..c1f2190 100644
--- a/src/ESP32-targz-lib.cpp
+++ b/src/ESP32-targz-lib.cpp
@@ -382,7 +382,7 @@ void BaseUnpacker::hexDumpData( const char* buff, size_t buffsize, uint32_t outp
     }
   }
   Serial.println( byteToStr + bytesStr + " " + binaryStr );
-  delete byteToStr;
+  delete[] byteToStr;
 }
 
 
@@ -401,7 +401,7 @@ void BaseUnpacker::hexDumpFile( fs::FS &fs, const char* filename, uint32_t outpu
       hexDumpData( buff, bytes_read, output_size );
       bytes_read = binFile.readBytes( buff, output_size );
     }
-    delete buff;
+    delete[] buff;
   } else {
     Serial.printf("Ignoring file %s (%d bytes)", filename, binFile.size() );
   }
@@ -1359,7 +1359,7 @@ int GzUnpacker::gzUncompress( bool isupdate, bool stream_to_tar, bool use_dict,
       output_position = 0;
     }
 
-    if( isupdate && outlen > 0 ) {
+    if( isupdate && outlen > 0 ) { // Update requirement: written output size must be a multiple of SPI_FLASH_SEC_SIZE
       size_t updatable_size = ( outlen + SPI_FLASH_SEC_SIZE-1 ) & ~( SPI_FLASH_SEC_SIZE-1 );
       size_t zerofill_size  = updatable_size - outlen;
       if( zerofill_size <= SPI_FLASH_SEC_SIZE ) {